using System.Collections;
using System.Collections.Generic;
using TMPro;
using UnityEngine;
using UnityEngine.SceneManagement;
using UnityEngine.UIElements;
using KTGMGemClient;

public class LoadingScene : MonoBehaviour
{
    public TextMeshProUGUI loadingTxt;

    private AsyncOperation async = null;

    protected string dynamicTxt = "";
    protected static float UPDATE_TIME = 0.5f;
    protected float curTime = 0.0f;
    protected float totalTime = 0.0f;
    protected bool bLoadScene = false;
    // Start is called before the first frame update
    void Start()
    {
        loadingTxt.text = "LOADING";
        curTime = UPDATE_TIME;
    }


    IEnumerator LoadScene()
    {
        async = SceneManager.LoadSceneAsync(GameConfig.NextSceneName);
        async.allowSceneActivation = true;
        /*while (!async.isDone)
        {
            
            if (async.progress < 0.9f)
                progressValue = async.progress;
            else
                progressValue = 1.0f;
            slider.value = progressValue;
            progress.text = (int)(slider.value * 100) + " %";
            
            if (async.progress >= 0.89)
            {
                Debug.Log("进展时间分别是:" + async.progress + "," + totalTime);
                if( totalTime >= 3.0f )
                    async.allowSceneActivation = true;
                
                progress.text = "按任意键继续";
                if (Input.anyKeyDown)
                {
                    async.allowSceneActivation = true;
                }

            }

            //yield return null;
        }*/
        yield return null;
    }



    // Update is called once per frame
    void Update()
    {
        float tf = Time.deltaTime;
        curTime -= tf;
        if (curTime <= 0)
        {
            totalTime += 0.8f;
            curTime = UPDATE_TIME + curTime;
            // 更新文字.
            dynamicTxt += ".";
            if (dynamicTxt.Length > 6)
                dynamicTxt = "";
            loadingTxt.text = "LOADING" + dynamicTxt;
            if ((dynamicTxt.Length >= 1) && (!bLoadScene) )
            {
                bLoadScene = true;
                StartCoroutine("LoadScene");
            }
        }
    }
}